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I put files to the test to see if back-dragging dulls a file like many claim. I test coarse, medium, and fine files after I built a large testing rig to stroke tens of thousands of times. I also test if back-dragging unclogs files. I use the slow-motion camera to analyze the results and use a microscope to observe all the files!
Get the Pferd Files Here!
https://fireballtool.com/10-file-set-5-machinist-files-in-pouch/
Our New Hardtail Vise
https://fireballtool.com/fireball-hardtail-bench-vise-deposit-for-pre-order/
The Gloves I Wore
https://fireballtool.com/majestic-lightweight-cut-less-dyneema-diamond-a3-pu-coating-3-pack/
How did I build this Machine?
https://www.youtube.com/watch?v=52d0TmmQ5yI
Musicbed SyncID:
MB01UXDSPZMMX9Q